Stronghold Crusader is usually a pretty tough game, but I find that I get the most enjoyment out of it when I spend as much time on a single level as possible, easily fighting off endless hordes of computers due to an amazing starting position.
This map is one such map that I've made. Its got a simple design to it: you start out on a massive hill overlooking the computer opponents. This map is designed to allow a couple of people to be on a team in the game, so that you can destroy endless hordes together (as Dave and I once proved, its hard to spend your day doing anything more fun).
This game is currently at Version 1.0.0
Put this map in your "maps" folder withing your Stronghold Crusader installation. It should work immediately when you load the game.